Type casting mold



Nov. l0, 1931.

J. B. ABRATE TYPE CASTING MOLD Filed Aug. 26. 1930 2 Sheets-Sheet l Nov. 10, 1931. J. B. ABRATE TYPE CASTING MOLD Filed Aug. 2e. 1930 2 Sheets-Sheet 2 machines which automatically produce letter Patented Nov. 10, v1931 UNITED As'ra'riazs JEAN BAPTISTE ABRATE, or' rains,TRANCE,` AssIGNoit TQTHEMONOTYPE .couronne` TIoN LIMITED, or LoNDoN, ENGLAND Y TYPE CASTING.. MOLD Application med August 26, 1930, serial No. 472903,' anun France neeember'e, 1929;

This invention relates to improvements in the type casting molds used in composing machines. It is known that 1n composing by letter the copy to be printed the type is cast by the bottom casting process, i. e. in the upward direction in vertical cell, one of the walls of which is automatically adjustable so as to give the body of the type'a width corresponding to the width of the letter. This movable wall is constituted by the front edge of a blade sliding on a supporting plate and held between two bloclrswhich in their turn Y are secured to the said plate.

It frequently happens however that the metal cast under pressure creeps under the movable vblade and linally raises it, thus bringing about a stoppage of the machine and damaging important members of the same.

According to the invention, the movable blade comprises on its lower face a heel projecting at either side and engaging under the lateral blocks with a suitable mortise of the supporting plate. The blade thus held by the blocks is locked and cannot rise.

A construction of a composing mold according to the invention is illustrated by way of example in the accompanying drawings, in which Figure 1 shows the mold in perspective, with the movable cross member removed.

Figure 2 is a section on line II-II of F igure 1.

Figure 3 shows the mold after the removal of the blocks and of the sliding blade.

Figure 4 shows in perspective theV blade alone. i

The mold illustrated comprises a base 10 provided with two raised sides or flanges 11 and 12. In the said base is mountedja sup porting plate 13 to which are secured two blocks 14 and 15, one of which is pushed towards the other by a powerful spring 17 resting at the other end against a block 18.

Between the two blocks 14 and 15 can slide under the action of suitable members of the machine, a blade 19 held on the supporting plate 13 by means of an eccentric pin 16.

Between the blocks 14 and 15 and the flange 12 is normally placed a movable cross member `(not shown in the drawing); Figure lshows-v at20 vertical Scell offrectangular cross-sec v tion, the walls of which are constituted bythe. two blocks 14 and 15, the front edge#- ofthe blade 19 and theV side ofthe crossfvmember (net'showrr).-4

A'castingliole121 provided in the base-110,. enables the cast metal to be introduced from'- The.workingfy of the4 mold described is asV infF-iigufre '1,"to a; suitableepbsi-tioir ielatively'f to the blocks 14 and 15.-', the castingisefected bytmiea-ns sofia; force pump', themetal .rises in the .cell-,2.0-1. Atttl'iisamoment,.tojthe mold is applied a suitable matrix provided in intaglio with the letter to be formed, so that the metal penetrates into the recess and on solidifying, forms the letter.

he cross member slides thereupon to the right in Figure 1, so that one of the walls of the cell 20 disappears. The blade 19 then slides forwardly and ejects the letter which is seized by members of the machine for that purpose and placed behind'the letters previously produced.

According to the invention, the blade 19 comprises, as shown more particularly in Figure 4,"a shoe or slipper 22 projecting slightly, to either side of the plane of the blade. When the blade is put in position, the said slipper 22 engages with a suitable mortise 23 (Figure 3) of the supportingI plate 13 and extends under the blocks 14 and 15 as indicated in section in Figure 2.

It will be seen that owing to this arrangement, the blade 19 cannot rise without raising the blocks, and as the latter are firmlyy secured to the Vplate 13, the blade 19 is forced to remain in place.

Formerly the blade 19 was held simply by the eccentric pin 16 but this has been found inadequate to prevent the cast metal from CIJ sof

the arrangement according to the invention, and it must be further pointed out that the slipper 22 gives the blade 19 a much better seating or bearing surface than formerly, so that its wear is also reduced.

It must be pointed out that, as shown more particularly in Figure 2, there is a certain play in the mortise 23 at each side of the slipper 22, so that the adjustment and the determination of the dimensions of the said m'ortise are facilitated, and only its height has to be determined in a very exact manner.

It is obvious that the invention does not preclude any modifications that can be made in the various members of the mold, always provided, however, that the movable blade 19 held between two blocks always slides on a supporting plate.

I claim In a type casting m'old, the combination of side blocks forming thewalls of the casting cavity, a supporting plate for said side blocks, a movable blade adapted to slide to and fro horizontally between the said blocks, and projections carried at the lower face of the blade and projecting to either side thereof, and adapted to enter a groove in the supporting plate underneath the side blocks to be engaged by the latter.

In testimony whereof, I affix my signature.

JEAN BAPTISTE ABRATE. 

